The music on this CD has a definite Sci-Fi / Godzilla sound to it. I'm not sure of the meaning of the secondary names in this series. This one is
SHOCHIKU. Shochiku and Toei are the main competitors of Toho.

The music in these tracks are very similar to those in the Godzilla movies and sound close enough to be alternate versions. While there are a few
uptempo marches here, most of the tracks are slow, horn & string laden themes reminiscent of the music playing in the original Godzilla film when
Godzilla is exposed to the Oxygen Destroyer.

This is an enjoyable CD to listen to.

English Title: The Complete Collection of Unreleased Soundtracks by Akira Ifukube:
The Shochiku Collection
Japanese Title: Ifukube Akira Mihappyo Eiga Ongaku Zenshu - Shochiku Hen
[Oh Wolf, Slay the Setting Sun! *1]
1. Main Title
2. Rainy Night
3. Dad's Death
4. Toranosuke's Past
5. Mohei Ikemoto *2
6. The Apprenticeship
7. Ohide *2
8. The Iba Martial Arts Gymnasium
9. Lady Swordsman
10. Battle in the Hakone Mountains
11. Hanjiro Nakamura *2
12. Espionage
13. On the Horizon
14. Hoshuni the Nun
15. Kichinosuke Saigo *2
16. Reiko *3
17. Nighttime Raid
18. Master's Foe *4
19. The Battle of Toba-Fushimi: Off to Edo!
20. Before the Storm
21. Chapter Title: Rough Waters
22. The Shogun Leaves Edo
23. Kondo's Neck
24. The Ueno War
25. Reiko's *3 Death
26. Monster of Vengeance
27. Okita Commits Suicide *5
28. Off to Hakodate!
29. Tokyo in the 6th Year of the Meiji Era
30. Reunion with Hanjiro
31. Reunion with Ohide *2
32. Hanjiro Shaves His Face
33. Vengeance ? Off to Kagoshima!
34. Hanjiro Remembers
35. The Duel
36. The Southwest War
37. Ending
[The Woman Running on the Shore *6]
38. Main Title
39. The Soldiers' Send-Off Party
40. The Wharf
41. The Artisan's Workshop
42. Into Rough Seas
43. The Church at Sunset
44. Ending
[The Woman in the Typhoon Area]
45. Main Title ? Shootout at Sea
[Free School *7]
46. Main Title
[Crazy Uproar]
47. Main Title
*1 The IMDb does not offer an English title for this work,
the Japanese title of which is "Okami yo, Rakujitsu o Kire!".
*2 A name.
*3 A girl's name in Japan. Also possibly 'Hiroko' or 'Noriko'.
*4 Or possibly "Our Master's Vendetta"
*5 Or possibly "Okita's Resolve"
*6 The IMDb does not offer an English title for this work,
the Japanese title of which is "Nagisa o Kakeru Onna"
*7 The IMDb does not offer an English title for this work,
the Japanese title of which is "Jiyu Gakkou"